The Analyticity Breakdown for Frenkel-Kontorova Models in Quasi-periodic Media: Numerical Explorations

被引：9

作者：

Blass, Timothy ^{[1
]}

de la Llave, Rafael ^{[2
]}

机构：

[1] Carnegie Mellon Univ, Dept Math Sci, Ctr Nonlinear Anal, Pittsburgh, PA 15213 USA

[2] Georgia Inst Technol, Sch Math, Atlanta, GA 30333 USA

来源：

JOURNAL OF STATISTICAL PHYSICS | 2013年 / 150卷 / 06期

基金：

美国国家科学基金会;

关键词：

Quasi-periodic solutions; Quasi-crystals; Hull functions; KAM theory; STATISTICAL-MECHANICS; EQUILIBRIUM STATES; INVARIANT TORI;

D O I：

10.1007/s10955-013-0718-8

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study numerically the "analyticity breakdown" transition in 1-dimensional quasi-periodic media. This transition corresponds physically to the transition between pinned down and sliding ground states. Mathematically, it corresponds to the solutions of a functional equation losing their analyticity properties. We implemented some recent numerical algorithms that are efficient and backed up by rigorous results so that we can compute with confidence even close to the breakdown. We have uncovered several phenomena that we believe deserve a theoretical explanation: (A) The transition happens in a smooth surface. (B) There are scaling relations near breakdown. (C) The scaling near breakdown is very anisotropic. Derivatives in different directions blow up at different rates. Similar phenomena seem to happen in other KAM problems.

引用

页码：1183 / 1200

页数：18

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